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Nama	Ukuran	Aksi
cache	-	Open
agent.js	5.74 MB	View DL Edit
dns.js	1.26 MB	View DL Edit
fetch.js	3.85 MB	View DL Edit
index.js	1.15 MB	View DL Edit
options.js	1.43 MB	View DL Edit
pipeline.js	1.09 MB	View DL Edit
remote.js	4.02 MB	View DL Edit

Edit file: /lib/node_modules/npm/node_modules/make-fetch-happen/lib/dns.js

const LRUCache = require('lru-cache')
const dns = require('dns')

const defaultOptions = exports.defaultOptions = {
  family: undefined,
  hints: dns.ADDRCONFIG,
  all: false,
  verbatim: undefined,
}

const lookupCache = exports.lookupCache = new LRUCache({ max: 50 })

// this is a factory so that each request can have its own opts (i.e. ttl)
// while still sharing the cache across all requests
exports.getLookup = (dnsOptions) => {
  return (hostname, options, callback) => {
    if (typeof options === 'function') {
      callback = options
      options = null
    } else if (typeof options === 'number') {
      options = { family: options }
    }

options = { ...defaultOptions, ...options }

const key = JSON.stringify({
      hostname,
      family: options.family,
      hints: options.hints,
      all: options.all,
      verbatim: options.verbatim,
    })

if (lookupCache.has(key)) {
      const [address, family] = lookupCache.get(key)
      process.nextTick(callback, null, address, family)
      return
    }

dnsOptions.lookup(hostname, options, (err, address, family) => {
      if (err) {
        return callback(err)
      }

lookupCache.set(key, [address, family], { ttl: dnsOptions.ttl })
      return callback(null, address, family)
    })
  }
}

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